Ignite fluorescent lamp circuit at low temperature and low pressure

The method shown is to add a diode to the circuit.
When the starter is ionized, the diode conducts in the positive half cycle and acts as a rectifier, making the current
in the circuit approximately DC. For this rectified current, the impedance of the ballast is small, which increases the instantaneous current flowing through the filament and enhances the electron emission capability. On the other hand, due to the large current flowing through the ballast, the stored magnetic energy is also large, and the self-inductance potential generated at the moment the starter is turned off is also high. Therefore, the lamp is easy to ignite . If the lamp still does not light up easily after connecting the diode, the two feet of the starter should be reversed.     The above method can not only accelerate the lighting of the lamp, but also extend the life of the lamp. The diode should be any type of diode with a reverse withstand voltage of 400V and a rectified current of 500mA . This circuit can quickly start and light up 8W and 20W fluorescent lamps at -lo°C and 180V voltage .